oj.uz

Submission #845558

# Submission time Handle Problem Language Result Execution time Memory
845558 2023-09-06T14:07:47 Z tibinyte Closing Time (IOI23_closing) C++17
29 / 100
 1000 ms 2097152 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 1e18 + 1;
int max_score(int n, int x, int y, ll k, vector<int> u, vector<int> v, vector<int> w)
{
    x++;
    y++;
    vector<vector<pair<int, int>>> g(n + 1);
    for (int i = 0; i < n - 1; ++i)
    {
        u[i]++;
        v[i]++;
        g[u[i]].push_back({v[i], w[i]});
        g[v[i]].push_back({u[i], w[i]});
    }
    vector<vector<ll>> cost(n + 1, vector<ll>(2));
    function<void(int, int, int)> compute_cost = [&](int node, int parent, int qui)
    {
        for (auto i : g[node])
        {
            if (i.first != parent)
            {
                cost[i.first][qui] = cost[node][qui] + i.second;
                compute_cost(i.first, node, qui);
            }
        }
    };
    compute_cost(x, 0, 0);
    compute_cost(y, 0, 1);

    function<int()> greedy = [&]()
    {
        set<tuple<int, int, int>> accesibile;
        vector<vector<int>> viz(n + 1, vector<int>(2));
        accesibile.insert({0, x, 0});
        accesibile.insert({0, y, 1});
        int ans = 0;
        int left = k;
        while (!accesibile.empty())
        {
            int adam, qui, byqui;
            tie(adam, qui, byqui) = *accesibile.begin();
            accesibile.erase(accesibile.begin());
            if (adam > left)
            {
                break;
            }
            left -= adam;
            ans++;
            viz[qui][byqui] = true;
            for (auto i : g[qui])
            {
                if (!viz[i.first][byqui])
                {
                    accesibile.insert({cost[i.first][byqui], i.first, byqui});
                }
            }
        }
        return ans;
    };

    function<int(int)> solve_root = [&](int root)
    {
        vector<vector<vector<ll>>> dp(n + 1, vector<vector<ll>>(n + n + 1, vector<ll>(3, inf)));
        vector<bool> important(n + 1);
        vector<int> sz(n + 1);
        function<void(int, int)> dfs_important = [&](int node, int parent)
        {
            if (node == x || node == y)
            {
                important[node] = true;
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    dfs_important(i.first, node);
                }
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    important[node] = important[node] || important[i.first];
                }
            }
        };
        dfs_important(root, 0);
        function<void(int, int)> dfs = [&](int node, int parent)
        {
            dp[node][1][0] = cost[node][0];
            dp[node][1][1] = cost[node][1];
            dp[node][2][2] = max(cost[node][0], cost[node][1]);
            sz[node] = 1;

            if (node == x)
            {
                dp[node][1][1] = inf;
            }
            if (node == y)
            {
                dp[node][1][0] = inf;
            }
            for (auto i : g[node])
            {
                if (i.first != parent)
                {
                    dfs(i.first, node);
                    int maxleft = sz[node] + sz[node];
                    int maxright = sz[i.first] + sz[i.first];
                    for (int color = 0; color <= 2; ++color)
                    {
                        vector<ll> merged(maxleft + maxright + 1, inf);
                        for (int color2 = 0; color2 <= 2; ++color2)
                        {
                            if (color != color2 && color != 2)
                            {
                                continue;
                            }
                            for (int cntleft = 1; cntleft <= maxleft; ++cntleft)
                            {
                                for (int cntright = 1; cntright <= maxright; ++cntright)
                                {
                                    merged[cntleft + cntright] = min(merged[cntleft + cntright], dp[node][cntleft][color] + dp[i.first][cntright][color2]);
                                }
                            }
                        }
                        for (int cnt = 1; cnt <= maxleft + maxright; ++cnt)
                        {
                            if (important[i.first])
                            {
                                dp[node][cnt][color] = merged[cnt];
                            }
                            else
                            {
                                dp[node][cnt][color] = min(dp[node][cnt][color], merged[cnt]);
                            }
                        }
                    }
                    sz[node] += sz[i.first];
                }
            }
        };
        dfs(root, 0);
        for (int i = n + n; i >= 1; --i)
        {
            if (dp[root][i][2] <= k)
            {
                return i;
            }
        }
        return 0;
    };
    int ans = greedy();
    vector<int> lying;
    function<void(int, int, vector<int>)> find_nodes = [&](int node, int parent, vector<int> curent)
    {
        curent.push_back(node);
        if (node == y)
        {
            lying = curent;
        }
        for (auto i : g[node])
        {
            if (i.first != parent)
            {
                find_nodes(i.first, node, curent);
            }
        }
        curent.pop_back();
    };
    find_nodes(x, 0, {});
    sort(lying.begin(), lying.end(), [&](int x, int y)
         { return abs(cost[x][0] - cost[x][1]) < abs(cost[y][0] - cost[y][1]); });
    ans = max(ans, solve_root(lying[0]));
    return ans;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct

Subtask #1
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1022 ms 2097152 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 688 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct

Subtask #3
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 688 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 2 ms 1464 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1200 KB Output is correct
15 Correct 2 ms 1368 KB Output is correct
16 Correct 2 ms 1628 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 39 ms 28056 KB Output is correct
20 Correct 30 ms 23492 KB Output is correct
21 Correct 29 ms 25840 KB Output is correct
22 Correct 38 ms 27840 KB Output is correct
23 Incorrect 34 ms 28212 KB 1st lines differ - on the 1st token, expected: '420', found: '82'
24 Halted 0 ms 0 KB -

Subtask #4
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 688 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 2 ms 1464 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 1200 KB Output is correct
15 Correct 2 ms 1368 KB Output is correct
16 Correct 2 ms 1628 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 348 KB Output is correct
19 Correct 39 ms 28056 KB Output is correct
20 Correct 30 ms 23492 KB Output is correct
21 Correct 29 ms 25840 KB Output is correct
22 Correct 38 ms 27840 KB Output is correct
23 Incorrect 34 ms 28212 KB 1st lines differ - on the 1st token, expected: '420', found: '82'
24 Halted 0 ms 0 KB -

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 440 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1464 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1200 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 440 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 1 ms 604 KB Output is correct
39 Correct 2 ms 1372 KB Output is correct
40 Correct 2 ms 1376 KB Output is correct
41 Correct 2 ms 1580 KB Output is correct
42 Correct 2 ms 1372 KB Output is correct
43 Correct 1 ms 1372 KB Output is correct
44 Correct 2 ms 1372 KB Output is correct
45 Correct 2 ms 1372 KB Output is correct
46 Correct 2 ms 1368 KB Output is correct
47 Correct 2 ms 1372 KB Output is correct
48 Correct 2 ms 1112 KB Output is correct
49 Correct 1 ms 604 KB Output is correct
50 Correct 1 ms 436 KB Output is correct

Subtask #7
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1464 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1200 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 39 ms 28056 KB Output is correct
21 Correct 30 ms 23492 KB Output is correct
22 Correct 29 ms 25840 KB Output is correct
23 Correct 38 ms 27840 KB Output is correct
24 Incorrect 34 ms 28212 KB 1st lines differ - on the 1st token, expected: '420', found: '82'
25 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1464 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1200 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 39 ms 28056 KB Output is correct
21 Correct 30 ms 23492 KB Output is correct
22 Correct 29 ms 25840 KB Output is correct
23 Correct 38 ms 27840 KB Output is correct
24 Incorrect 34 ms 28212 KB 1st lines differ - on the 1st token, expected: '420', found: '82'
25 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 2 ms 1464 KB Output is correct
14 Correct 2 ms 1372 KB Output is correct
15 Correct 1 ms 1200 KB Output is correct
16 Correct 2 ms 1368 KB Output is correct
17 Correct 2 ms 1628 KB Output is correct
18 Correct 2 ms 1628 KB Output is correct
19 Correct 2 ms 348 KB Output is correct
20 Correct 39 ms 28056 KB Output is correct
21 Correct 30 ms 23492 KB Output is correct
22 Correct 29 ms 25840 KB Output is correct
23 Correct 38 ms 27840 KB Output is correct
24 Incorrect 34 ms 28212 KB 1st lines differ - on the 1st token, expected: '420', found: '82'
25 Halted 0 ms 0 KB -